Rita mentions that money is the cornerstone of any campaign. What is a synonym for "cornerstone?"

Cornerstone means the foundation of or a basis. Here are some synonyms:

Base

Basis

Foundation

Fundament

Key (not in the literal sense of the word)

I hope that this helps. :)

even though you have attached neither the chart nor the generalizations, i have located them online. the right answer is d, since they are asking you about a generalization. you can only infer from the chart that between 2008 and 2009 the number of employed workers decreased significantly (from over 115 millions to 107 millions approximately), which signals some type of economic crisis.